Just noticed strange behaviour of YamlConfiguration, where getStringList (and getList method, too) returns a list where 'yes' is changed to 'true'.

I've set the priority to major because this cause an exception to be thrown and possible stopping plugin to function.

Example yaml:

  Whitelist:   - yes
  - hello

Example java:

<yamlConfigurationInstance>.getList("Whitelist") // and print out the values to see the result